摘要
为了研究上盖物业地下车辆段夹层中烟气运动特性,搭建1:50缩尺模型实验台,并将实验结果与FDS全尺寸模拟结果进行比较。在确定的火源功率下,在混合通风系统中设置5种不同的风速,并与自然通风进行对比。结果表明:相较于自然通风系统,混合通风系统可以更好地对烟气进行控制;1.4 m/s的风速可以形成稳定的烟气层;在自然通风和混合通风系统中,夹层CO体积分数始终低于0.06%,但是在自然通风系统中CO会在夹层顶棚处聚集,不利于人员疏散。
In order to study the basic characteristics of smoke movement in the interlayer of the underground depot with superstructure,a 1:50 scale model test bench was built,and the results were compared with the FDS full-scale simulation.Under the determined source power,five different wind speeds were set in the hybrid ventilation system,and a natural ventilation system was used for comparative experiments.The results showed that the mixed ventilation system can control the flue gas better than the natural ventilation system;a stable smoke layer can be formed at a wind speed of 1.4 m/s;in natural ventilation and hybrid ventilation systems,the concentration of carbon monoxide in the interlayer is always less than 0.06%,but in natural ventilation systems,carbon monoxide will accumulate at the ceiling of the interlayer,which is not conducive to evacuate.
作者
朱立
潘旭海
华敏
ZHU Li;PAN Xu-hai;HUA Min(College of Safety Science and Engineering,Nanjing Tech University,Jiangsu Nanjing 210009,China;Institute of Fire Science and Engineering,Nanjing Tech University,Jiangsu Nanjing 210009,China;Jiangsu Key Laboratory of Urban and Industrial Safety,Nanjing Tech University,Jiangsu Nanjing 210009,China)
出处
《消防科学与技术》
CAS
北大核心
2020年第3期297-300,共4页
Fire Science and Technology
基金
国家自然科学基金项目(51476075)
江苏高校优势学科建设工程项目。
作者简介
朱立(1995-),男,江苏苏州人,南京工业大学安全科学与工程学院硕士研究生,主要从事建筑火灾烟气控制和人员疏散研究,江苏省南京市浦口区浦珠南路30号,210009;通信作者:潘旭海(1977-),男,南京工业大学安全科学与工程学院教授。
